Extensible hammer mechanism.



w. w. LASKER.

EXTENSIBLE HAMMER MECHANISM. APPLlcmou man nun. |916.

` ,253,696. u Patentd Jan. 15,1918.`

2 SHEETS--SHEET 2- UNITED sTATEs PATENT OFFICE.

WILLIAM W. LASKEB, 0F BROOKLYN, NEW YORK, ASSIGNOB TO POWERS .ACCOUNTING MACHINE COMPANY, OF NEW YORK, N. Y., A CORPORATION 0F DELAWARE.

ExTENsIBnn HAMMER MEcHANisM.

Bpeeication or Letters Patent.

Patented Jan. 15, 1918.

Application tiled May 17, 1916. SerialNo. 98,019.

ments in the type positioning and rlntngiw mechanism illustrated in the copen ing a plication of James Powers, Serial o. 847,581, filed June 27, 1914.

WVith mechanism' in` which swinging type carrierscoperate with type striking ham-4 mers, such as illustrated in the aforesaid copendlng application, demand has longfexisted for facilitating the assemblage of the several parts. When the several castings of the mechanism were assembled, and the active `parts 'putin place, it was frequenti found that but a fraction of a thousandt of an inch departure from'perfect alinement would cause any amount of trouble when it was attempted to -operativel connect the swinging type carriers with t e hammer actuating means. f V y yllxperiment has shown that slightly elonatingl or shortening the lever c"011nectin `r ghe type carrier actuators with the hammer actuators was allthat was necessary 1'.o"prop` erly bring` the several parts into proper operative relation; To this e'nd the present invention contemplatesthe provision of ani adjustable connecting means' for connecting the type carrier actuators with the hammer actuators. w

.-These and` other features, capabilities and advantages of the invention will appear from ,the subjoined detail descrlption of one specific embodimenti thereof illustrated inv the .accompanying drawing, in which--v .Fi-gure;l1is affragmental elevation illus-- trating a Section of an accounting machine equipped with the -present improvement showing the: hammer lever anchoring' the hammers in retracted position'.

`Fig. 2 is a fragmental elevation illustrating a section of anaccounting machine sim'ilar to Fig..1,but showing the hammer Alever havin `released theham-mers to permit them i to str1 e type. l

Fig. 3 is a'detached detail-.of an extensible lever showing the same in extended position lmiued,'either by the accumulatin as distinguished from Figs. 1 and 2, in which the lever 1s shown in contracted position.

In the embodiment shown there is illustrate'd a shaft 8 to which the type carrying l segments 9, the gear segments 10, and the ret-rector cheeks 11 are pivotall connected. The segments 9 and 10 are loose y connected to oneahother by the connection formed by the slotl2 and pin 13.

The segments 9are provided with the t pe 14 to cooperate-.with the hammers 15 w en the segments 9 are released by the retractor bar 16 of the retractor cheeks 11.

The segments 10 are provided with teeth 17 for co eration with the accumulators 18 to accumu ate for'the purpose of adding.

The segments 9 are provided with suitable springs" (not shown) whereby when the retractor bar 16 is actuated out of contact with the segments 9, such segments 9 will be resiliently advancedl to the position deterwheels 18 or any'other suitable means.l he segments 10, due to the connection, slots 12 and pins 13, will be carried forward with the segments 9 when they are released. Inturn when the retractor bar 16 is withdrawn to return the segments 9, the rear edges of the segments 9will engage the stops 19 formed on the segments 10 and thereby simulta neously return the segments 10.

For actuating the retractor cheeks 11 and thereby the retractor bar 16, a lever 20i"s provided pivotally connected at its up Ver end to the shaft 2.1. The lever 20 comprises essentially anupper arm 22, 'the up er'end of which is pivotally connected as afbresaid to the shaft 21, and a lower enlar ed portion 23 in which is formed a heart-mpedvcamV slot 24. The rear lower portion ofthe lever 20 is pivotally -connected to the'upwardly extending portion 25 of the' link 26, the lower forward end of which link is pivotally connected to the "cranksector 27 which is secured to the main actuating shaft-28. Une of the retractor cheeks 11 is provided-with a cam roller 29 for en aging thelcaa slot 24. The operation of tie foregoing is substantial] as follows: the crank sector, 27 is oscillatedby the' shaft 28, the forward oscillation initiating the actuation ofthe t pe` at zu waning 1m1- y'20',.1md am conne# 1 tion of the retractor cheeks 11 with thel lever by means of the cam roller 29 cooperan. ing with `the cam slot 2 4, the retractorrbar' 16 will` be actuated on` the forward oscillation of the crank sector 27 thereby to release the type carr ing segments and ermit them to be a vanced by sprlngs not shown, as aforesaid), and 1n turn on the rearward oscillation of the crank sector 2.7, the retractor bar 16 will be actuated to engage the segments 9 and return them to idle position thereby likewise returning the ear se" ents 10, as aforesaid. From the .onregoing it will be seen that the final posltion of the roller 29-on the forward oscillation ofthe crank sector 27 will bein the forward portion of thecam 'slot 24 and that the final i hammer to be actuate the latch 32 connected At positionof the roller 29 on the rearward oscillation 'of the crank sector '27 will be 1n the portion ofthe cam slot 24, thereby efectin a dwell at both final positions,

-which well is instrumental in facilitating the proper operation-of the several parts of the ri-nting and accumulating mechanisms.'

enever the type carrying segments are released lto be pos'1tioned or prm ing, their forward movement will initiate t e 'actua- -tion of the hammers 15.` The hammers 15 are ivotally mounted on' the shaft 30. The head) portion of each hammer 15 is provided with a hook portion 31 to coperate with a latch' 32 pivotally mounted on the' shaft 33. Each latch 32'is pivotally connected with a lever 34, the rear end of which rides on the forward end of a link 35 loosely mounted on the shaft 36, the rearward end of which link 35 is provided with a ledge 37 ,positioned to be engaged by the cam surface 38 of a segment 9 when such segment is advanoed into printing position. Whenever a segment 9 is so advanced into printing position and strikes the ledge 3,7 of a llnk 35, such link will'position the lever 34 riding thereon to be actuated which,

creto, which latch 32'Wil1 thereby 4,be a'ctuated to release the hammer it is anchoring and permit such swung upward vby its motive spring 39, which motive spring connects the rearwardly extendingr portion 40 vof thehammer 15 w1th the spring abutment 41. The

rearwardly extending portion 40 of eachto the shaft 30, an arm 45 is preferably fixed 1 to the arm 30 inaccordance with the present embodiment, which arm 45 is 4pivotally connected to thecrank sector-'link 26 b' the hammer link 46. The construction fy this hammer link 46 in relation to the several para of in sans@ a" ma fa'- ure ofthe present improvement. i"Ihe operation of the aforesaid is substantially as follows: whenever-the crank sector link 26. is

actuated -by the forward or initial oscillation of the crank sector 27, thereby ermitting the advance of-the type carr ing se ents 9, the link 46 will be actuated orwar y thereby to swing the arm 45 and with it the retractor plate43 out of the way of the lingers 42 to permit such of the hammers 15 as are released to be swung'up to strike types- 14. Then upon vthe return oscillation of. the. crank sector 27,. the link 46 will be actuated rearwardl thereby swinging4 the rretractor plate 43 into contact with the fingers 42 and in its further movement withdraw the hammers 15 until their are again engaged and anchored by the latches 82.

The present invention contemplates making the lever 46 of two parts, Anamel the forward portion 47 and the rcarwar portion 48. The rearward portion- 48 is provided with two set screws 49 and 50, and the forwardportion 4 7 is provided with two slots 51 Vand 52 for recelving the screws 49 and 50 respectively. By means of the foregoing screw and slot connection, the levery 46 may, with `facility, beelongated or shortened to various-.lengths within certain limits.l In Figs. 1 and 2, lever 46 is shown in its extreme shortened form, and in Fig. 3 the le ver is shown in its extreme elongated form.

It will be Seenthat the portion 48of the lever 46 is provided withV a slot 53 .for receivin the screw 54 of the link 26, whereby the. 1in s 46 and'26 will have a loose con-necticn with one another. For resiliently maintalnn the link. 46 so that the forwardv end of its s ot 53 enga es the screw 54, the spring 55 .1s Ifovided w ich connects the llink 46 with t e link 26.

It is obvious that made to the details lof hook'portions 31' the construction without departing from the f general spirit of the inventlon.

1. rlhe combination with swinging type carrylng segments and type striking hammers, .of a hammer retractor, means for actuatlng said type carryin-gseg1nent=s intoprintlng position, retracting meansl for per-- m1ttmg t e saidsegments to be actuated, anda longitudinally adjustable link' connectmg -said retractlng means withsaid hammer retractor to permit the hammers to' be actuated simultaneously with-'they acta-A tion of the tyipe carryin segments the longitudinal a Justment` olgsaid link facilitating the adjustment of the several lparts of the mechanism whenassembling the same.

2. The combination with swinging' type carryin segments and type striking hammers, o a hammer retractor, an initial oscilf 16 I v tractor to. permit the hammers to be actuso l v second link `comprising two portions, yset carryin latable actuator, retracting means for said type carrying segments, means for actuating said type carrying segments into printing position a link connecting 'said actuator with salcl retracting means, and a second longitudinally adjustable link connecting said first link with said hammer retractor.v

3. The combination with`swinging .type

segments and type striking hammers, o a hammer retractor, means for actuating ,said type carrying segments into printing position, retracting means for permitting the said segments to be actuated, a longitudinally adjustable link connecting said retracting means with said hammerre- .fated simultaneously with the actuation of the type carrying segments,the linkcomo `prismg two` port1ons,'and set screws for con- ",nectin the two portions to one another. l

` 4;'1'1e ,combination with swinging, type "carx'yin "segmentsfa'ndltype striking hammers, o a hammer'retractor,`an initial oscillatablegfactuator, retracting means for said type 'carrying segments, means for actuating said type carrying` segments intowprinting position, a connecting "said actuator 'with said retractinlg.'means, a second-longitudinal-l adjustable link connecting said said retracting means engaging saidk cam slot, an initial oscillatable actuator, alink a connecting said second lever with samt actuator, and a second link longitudinally adjustable and connecting said lirst named lever with said first named link.

7. The combination with swinging type carrying segments and type striking hammers, of a hammer retractor plate, a shaft arms mounting said retractor Iplate and fixed to said shaft, means for actuating said type carryingsegments into (printing position, retracting means for sai type carrying segments, a lever secured to said shaft, a second shaft, a second lever pivotally connected to said second shaft an enlargement at'thel lower end of said heart-shaped cam slot therein, a roller on said retractin means engaging said cam slot, an initia oscillatable actuator, a link connecting said second lever with said actuator;` a set screw on saidlink, a second link longitudinally adjustable having an elongated slot receivin said screw and formin a loose connection etween said first name link and said second link, the .secondlink connecting said first named link with said o rst named lever.

first lin with said hammer retractor, the

screws secured to one of vsaid portions, and

``.tlaererjbeing' slots in the other `of said porti'oi'is for receiving said set screws whereby theportions may be anchored to one another A to .form-different lengths of said second link.`

The -combination with swinging'type Vcarryingsegments and ytype striking ham- .mers, of a hammer retractor plate a 'arms mountmg said retractor plate and a shaft,

fixed to said shaft, means for actuating said type carrying segments into prmting position, retractingmeans for said type carryin `se ments, a lever secured to said shaft, an

a ongitudinally adjustable link connecting saidlleverwith said retracting means `to permit the hammers to be actuated simultaneously with the actuation of the type carry-r" v ing se no o `carrylng ents. t

6. e combination with swinging type segments' and type striking hammers, o a hammer retractor plate, a shaft, arms mounting said retractor plate and fixed to said shaft, means for actuating said t pe carrying segments into printing position, retracting means for said type carrying segments, a lever secured to said shaft, a second shaft, a second lever pivotally connected to saidsecond shaft, an enlar ement at the lower end of said second lever aving .8.' The combination, with type carrying second lever having akk y kat segments and type striking hammers, of a hammer retractor; an actuator; retracting means for said segments; means for' actuating the segments into printing position; a link connecting the actuator with the retracting means; and an extensible link connecting said rst named'link with the hammer retractor andcomprising two portions,

one of which has alined slots at lts inner end, and sc t screws passn through ysaid slots respectively and screwe into the inner end of the other portion. f t

9. The combination, with type carrying segments and type striking ham'mersof a hammeruretractor; an actuator; retracting means for said segments; means Ifor actuating the segmentsinto printingposition; aj

a. heart-shaped cam slot therein, a roller on i ylink yconnectingrthe actuator w1th"`the retracting means; `and an extensible link connecting said lirst named link with the hammerf-retractor and comprising two'portions, oneof which` has alined slots atlts inner end, and set screws passing through said slots respectively and screwed intothe inner end of the other portion, one of said slots having an open end for facilitating the assembling of the link. v i

WILLIAM w. InsigniaI Witnesses: v l H. I. Smear.,

H. D. PnNNnr.

nro 

